Cone holder



Feb. 11, 1941. J. c. HOUCK 2,231,122

coma HOLDER Filed March 2, 1938 Patented Feb. 11, 1941 X UNITED STATESPATENT OFFICE CONE HOLDER Wickham Application March 2, 1938, Serial No.193,596

8 Claims.

This invention relates to the art of packaging yarn and thread,particularly silk thread, by winding the same on cores commonly known ascones or cops. As known to those skilled in the art, the practice is toform the filamentary material into thread by suitable machinery and thento wind the formed thread into a package upon a central core or copcommonly; formed of some light material such as pressed paper or thelike. The cones upon which the thread is to be wound are mounted ondriven spindles which are rotated at the appropriate speed to effect theproper winding of the thread thereonto.

In such winding operation it is highly important to insure againstrelative slipping between the cone and the spindle upon which it ismounted. If the cone slips on the spindle the winding will suffer inconsequence due to the resulting irregularity, and the finished packagesuffers in consequence due to the defects.

The diverse types of spindles employed in the art on the various typesof machines necessitated the adoption of difierent expedients forsecuring the necessary binding engagement between the spindle and thecore member or cone upon which the thread is wound. Adapters have beenemployed, of various forms, and the generally accepted manner ofmounting contemplates a frictional engagement between the base portionof the cone and its mounting element which is in turn positioned uponthe spindle. This frictional engagement is effected by forcing the conedown onto its mounting element and as cones are used over and over againthey become structurally weakened by the repeated forcing action as theyare mounted on their holders. In time the cone becomes unserviceable dueto structural defects resulting and to an enlargement of the material atthe base of the cone which precludes the possibility of the requisitefrictional grip on its holders. Such cones must, of course, be discardedand their loss is an economic factor that is of material proportion.

An object of the present invention is to provide an improved holder forcones, cops, and like core members, provided with means operableautomatically to insure a positive binding driving engagement betweenthe cone and its holder.

Another object is to provide a cone holder hav- 0 ing a self-containedautomatic cone engaging adapted for mounting on a driving spindle andprovided with means operable through centrifugal force into positiveholding engagement with a cone or similar core member as the spindle isrotated, and which automatically disengages the cones when the rotationof the spindle is stopped.

While the disclosure of this application constitutes an illustrativeembodiment in which the invention is reduced to practice, it is to beunderstood that the structural details of the invention may be varied asdesired within limits not inconsistent with the scope of the inventionas claimed.

In the accompanying drawing:

Figure 1 is an elevation of a portion of a silk thread forming windingmachine and illustrating the service mounting of my improved cone holderwith respect to a spindle and cone.

Figure 2 is a top plan view of the holder.

Figure 3 is a bottom plan view thereof.

Figure 4 is substantially a side elevation of the holder sectioned onthe line 4-4 of Figure 2.

Figure 5 is a perspective View of one of the centrifugal clutch dogsemployed.

Figure 6 is a perspective view of a modified form of centrifugal clutchdog.

In the illustrated embodiment the holder comprises a body 6 of suitablematerial, preferably a casting of light weight metal alloy, formed as atruncated cone having an annular foot flange 1 at its base. The conicaltaper of the holder corresponds to the conventional conical taper of theusual cop or cone core 8 which is employed to hold the thread beingwound. The holder is so dimensioned that when a thread holding cone isslipped down over its top the base of the cone seats upon the footflange I with the inner face of the cone in slight frictional bindingengagement with the exterior face of the holder, this engagement beingsufiicient to efiect rotation of the cone with the holder in the initialstage of the winding operation.

The holder 6 is provided from top to bottom with an axial bore 9 adaptedto take over the blade Illa of a spindle so that in service the foot 4per face l2 of the holder is flat and somewhat countersunk, as seen inFigure 4, to provide a seat for a purpose to be described. The holder isfurther provided with an axial recess in its bottom portion and to suchdegree that the substantially flat bottom face I3 of the holder occupiesa plane parallel .to the plane of the top face l2 and appreciably abovethe plane of the foot flange 1.

The holder is further provided from top to bottom with a plurality ofaxially extended radial slots l4 which open to the outer face of theholder and which extend radially inward into the material of the holderbody between certain of the borings II. The slots M are arrangedpreferably at equidistantly spaced points in a circumferential seriesand the radial depth of each slot is such that it extends appreciablyinto the body of the holder. As seen best in Figure 4, the inner wall l5of each slot is parallel to the axis of the holder.

Seated on the flat top face l2 of the holder just beneath its upper edgeis a split ring l6 which bears against the circumferential inner wall ofthe holder at this point and which extends across the upper end of eachof the slots M, the ring thus providing at each slot a pintle upon whichis pivotally suspended a dog I l of the form 'best shown in Figure 5.

Each dog 1-"! corresponds in length to the length of its housing slot,and the thickness of the "dog is less than the width of its slot so thata slight clearance is provided which permits the dog to swing freely inits slot for limited radial oscillation from its point of pivotalconnection with the pintle ring l6.

Each dog I! is of L-shaped form, with its short leg 18 being providedwith an aperture l9 which receives the pintle ring l6 therethrough at apoint sufficiently radially inward of the outer face of the holder topermit free pivotal suspension of the dog within its housing slot.Outward radial movement of the respective dogs I! is limited by the footflange I which spans the lower ends of the slots M. Each dog I! isprovided on its outer edge with a pointed tooth 2| having an inclinedriser portion 22 tapered at an angle somewhat approximating the angle oftaper'of the holder. The tooth 2| projects laterally from the outeredgeof the dog and radially -of the holder.

As shown best in Figure 4, it will be seen that in each .of the slots Mthe dog H hangs normally in a position of rest in which the tooth 2| ishoused entirely within the slot and inwardly of the circumferentialsurface of the holder face.

This is due to the fact that as the inner wall !5 -"of each slotparallels the axis of the holder, the necessary clearance is provided toaccommodate full housing of each dog [1 within its slot 14 in its normalpositionof rest.

In service the holder 6 is engaged with a driving fit or connection overthe blade Illa of a spindle Hl, lEla with its foot flange 7 seated onthe top of the spindle whorl ID as seen in Figure 1. A core member, suchas a tapered cop :8 or the like is then slipped down over the holderinto a position wherein the base of the cop seats on the foot flange 1.As previously stated, the light frictional engagement between the copand holder 6 is sufiicient to insure rotation of the cop 8 during theinitial drive of the spindle in, ma.

With respect to the apparatus shown in Figure -1 it is sufficient tostate that, except as concerns the holder and cone, the details form nopart of the present invention. The apparatus illustrated forms a part ofa well-known type of doubler twister thread winding machine embodyingthe vertically traversing ring rail 23. The single spinning ring 24 isshown as specially mounted on a threaded rod 26 in accordance with theinvention fully described and claimed in my pending application SerialNo. 104,724 filed October '8, 1936, now Patent No. 2,188,242. As will beunderstood, the whorl sleeve IU of the spindle is driven by suitablebelt means, not shown.

In operation, as the rotative speed of the spindle and consequently theholder 6 increases, the action of centrifugal force will cause theclutch dogs I! to swing radially outward from their sockets so that thetooth 2| of each dog forcibly bites into or engages the usuallyroughened and relatively soft material of the inner face of the cop orcone 8, securely anchoring the cone against any possibility of slippingon the holder 6 and insuring a positive driving connection. Withthis-arrangement of holder it is possible to wind cones down to withinone quarter inch of their bottom.

Figure 4 illustrates by dotted lines the projected position of one ofthe clutch dogs ll. If

for any reason any of the dogs should 'not be fully retracted when theholded is at rest, when a cone is applied over the holder its bottomedge will ride upon the inclined riser portion 22 of a projecting toothand force the same radially inwardly to be housed within its slot, sothat no obstruction will be presented to complete mounting of the coneon :the holder. It will be evident that when rotation of the spindle isstopped, the clutch dogs i] will release themselves by the action ofgravity, swinging back into their housing slots into position as shownin full lines in Figure 4.

The modified form of clutch dog Ha shown in Figure 6 has the parts 2! a,22a corresponding to parts 21, 22 of the dog 57 of Figure 5. However,dog Ha instead of having a hole receiving ring I6, has its rearwardlycurved upper end Mia provided with a diagonal slot [9a whereby such dogcan be readily hooked onto ring 16 without necessitating removal of thelatter. When the member 6 is at rest dog Ha will hang in the full lineposition of dog I? of Figure 4; and when member 6 is rotated it willswing out to a position corresponding to the dotted line position of dogI! in Figure 4.

I claim: I

1. A cone mount for thread winding apparatus, comprising a truncatedconical holder and adapted for driving engagement with a spindle, a coneengageable detent pivotally mounted in said holder for movement bycentrifugal force, and stop means defining the extent of permissiblemovement of said detent in a cone engagement direction.

2. A cone mount for thread winding apparatus, comprising a truncatedconical holder adapted for driving engagement with a spindle, anexternal annular foot flange on the holder providing a cone base seat,said holder having a circumferentially arranged series of parallelperipheral slots extending in the direction of the length thereof fromthe top to bottom and opening to the exterior of the holder, a pintlering seated on the top face of the holder and overlying the upper end ofeach slot, a cone engaging detent pivotally suspended from said ring ineach slot and biased toa position housed entirely within the slot, andsaid flange spanning across said slots adjacent the lower ends thereofto limit projection of the detents from their respective housing slotsunder influence of centrifugal force.

3. A cone mount for thread winding apparatus, comprising a truncatedconical holder adapted for driving engagement with a spindle, anexternal annular foot flange on the bottom of said holder providing acone base seat, the body of said holder being recessed inwardly behindsaid foot flange, said holder having a lineally extending peripheralslot opening to its exterior and extending from top to bottom inwardlyof said foot flange, a cone engaging detent pivoted in said holder toswing radially outward through the slot under centrifugal force, andsaid foot flange providing a stop to limit the outward movement of saiddetent.

4. A cone mount or the like for thread winding apparatus, comprising atruncated conical holder adapted for driving engagement with a spindleand insertible in the base of a cone, said holder having a slot in itsWall opening inwardly from its outer surface, a cone-engageable detent,means pivotally mounting the detent in said holder slot in a manner tofully house said detent therein when the spindle is at rest, the depthof said slot being at least equal to the depth of said detent, and saiddetent being adapted to swing radially from said slot to operativeposition when the spindle and holder are rotated.

5. A cone mount or the like for thread winding apparatus, comprising aholder adapted for driving engagement with a spindle, a flange on saidholder providing a cone base seat, said holder having a peripheral slotsubstantially parallel with the holder axis, said slot extending belowsaid flange and spanned by the latter, a cone-engageable detent normallyhoused entirely within the slot and pivotally suspended from the upperend of the holder to move radially outwardly of the holder under theinfluence of centrifugal force, and said detent extending below theplane of the upper surface of said flange whereby the latter acts as astop to limit outward movement of said detent.

6. A cone mount for thread winding apparatus, comprising a holderadapted for driving engagement with a spindle, an annular flange on saidholder providing a cone base seat, said holder having a peripheral slotsubstantially parallel with the holder axis, said slot having its lowerend spanned by said flange, a dog normally housed entirely within saidholder slot and pivoted therein to project through said slot undercentrifugal force, and a toothed portion on the outer edge of said dogfor engaging the cone.

7. A cone mount for thread winding apparatus, comprising a, cone holderadapted for driving engagement with a spindle, said holder providing acone-supporting means and having a surface recess in its upper end, saidholder having a lineal peripheral slot therein, detent supporting meanssecured in said upper surface recess of said holder and extending acrossthe upper end of the slot, and a cone-engageable \detent pivotallysuspended from said detent supporting means to swing vertically in saidslot for movement radially of the holder.

8. A cone mount for thread winding apparatus, comprising a holder havinga conesupporting formation adapted for driving engagement with aspindle, a marginal flange extension at the upper end of said holder,said holder having a lineal peripheral slot extending from top to bottomand opening to its exterior, the inner wall of said slot being parallelto the holder axis, a cone engageable detent normally housed entirelywithin said slot, and a split ring on the top of said holder pivotallysuspending said detent within said slot to swing under the influence ofcentrifugal force, said split ring being held in place by said flangeextension,

JOHN C. HOUCK.

